Sliding trolley



Anali/12,1930. s MOORE ET AL 1,755,303

SLIDING TROLLEY Filed Dec. 223 1928 INVENTORS.

G/f 5. Moo/e5. orro Moo/vc.

l0 y n f ATTORNEYS.

' Patented Apr. 22, 1930,

- UNITED STATES GILEs s. MOORE, or INDIANAPOLIS, AND OTTO MOORE, or FRANKFOR'L mnIANA Application' mea December 22 192s. seriai No. 327,778.,

.of having relative lmovement with respect to` the pivotal mounting thereof so as to varyl the leverage' of the mounting to facilitate apar# tial `rotation thereof upon the lvehicle being reversed. f v

*Another feature-of the invention resides in the association with the sliding shoe contact of a joint rotative and elongated contact adapted to be brought into engagement with the trolley wire upon the reversed movement'y of the vehicle and the pivotal 4movement of Y the support. By reasonthereof, an elongated contact with the-trolley .wire 'is had with the advantages inherent'thereim'while the rotative action is adapted x to" prevent f sticking by reason ofthe relative position bev3.0 tween the wireand trolley pole. Without the rotative action, since the trolley pole is directed at an angle to the trolley wire, there would be danger ofthe trolley pole forcing the wire upwardly, thereby causing lbreakage. l But by reason of the rotative action, such pushing movement wouldcause ya rolling action to occur which would prevent it from being pushed upwardly. v

l Another feature of the invention Vresides in the particular arrangementfand position of the shunt for carrying the current fromy the shoe to the harp. 4

Other features of the invention Vwill be more fully set forth andv described in the following speciflcations and claims. v Y

The full nature of the invention will be more fully understoodfrom the accompanying drawings and the following description .and claims. i J

n Fig. '-1 is a side elevation of thetrolley when the vehicleis movingforwardly. "Figa y 2l is a 'front elevation thereof. Fig. 3 is the same as Fig. l showing the reversed position of the trolley whenY the vehicle ismoving rearwardly. p of. Fig.v vis a sectionlt'aken on the line 5'5 of Fig. 1. Fig. Gis the same as Fig. 3 showing a modified form of th'ereversing shoe. v Fig. 7 is a section through the maink shoe showingr the In the drawings there is shown a 'trolley pole-10 and a trolley wire 11. The polelO is mounted in the usual 'manner on the top of a vehicle such' as a street car or the likev and Y extends rearwardly and upwardlyy at an j angle as iswell known in the art. Mounted" upon the pole there is a ltrolley'harp 12 pro'k videdwith the arms 13 which provide a bifu-rcat-ed carriage for supportingl the ,':70

trolley. Pivotally supported between the i extreme ends of the arms 13th'ere is a trolley mounting 14 having an arcuate portion `15 on' one side thereof, a shoe supporting face 16 Y adjacent thereto and a bearing 17 for a trolley 7`5`y wheel 18. 'f f l 'Said mounting is pivotally secured upon the pin ,'19 locked in positionby the usual Cotter pin or the like, and which is surrounded by a bushing 20 freely rotatablefthereon S Slidably mounted upon 'the Yshoe supporting face 16 there is a main shoe 21"having substantial longitudinal dimensions and cupped in cross section to partially embrace the trolley wire and guide 'its sliding movement relative thereto. Said shoe has formed inte-l gral therewith a downwardly extendingprojection 22 which extends through a longitudinal slot in the shoe supporting face 16V and into vthe bifurcated pivotal mounting23. 90 Said bifurcatedl pivotal mounting 23 is rotatably mounted upon the pin l9whereby the trolley mounting may freely swing aboutsaid pin. f ,Y vThe bushing 20, acting in the nature' of a 95 roller to minimizev friction, surrounds 'the pin 19 and extends through the downwardly extending projection 22 of the sliding shoe 21, the opening in saidprojection'being elongated so that said shoe will beanchored-,upon

Fig. 4 is la rear elevation there; 55 i mounting thereof forreplace o` Yment. y f

the shoe supporting face 16 by reason of the pin, and freely slide longitudinally of said face on said pin. As shown in Fig. 3, the normal position of the shoe is indicated in dotted lines, and its position when the mounting is rotated into reversed position is shown in full lines.

Said shoe has an auxiliary or reverse shoe 24 formed integrally on the rear end thereof and having a wire engaging surface extending at substantially right angles to the main shoe and in line with the trolley wheel 18, whereby said auxiliary shoe 24 and the wheel 18 engage the trolley. wire jointly when the vehicle is reversed, as illustrated in Figs. 3 and 4.

VByreason of this construction, when the vehicle is moving forwardly the frictional resistance between the shoe 21 and the trolley wire maintains said shoe in rearward position with respect to the trolley mounting as shown in Fig. 1. This position of the shoe with respect tothe trolley mounting is such as to hold it in proper position with respect tothe harp wherein the stop member 25 abuts the same and maintains the proper relative positions therebetween. Upon the ve- A hicle being driven in the reverse direction,

- the trolley pole.

the frictional resistance between the shoe and wire will force the shoe forwardly in its sliding relation with the trolley mounting, thus overbalancing the same or altering the leverage and more readily causing said mounting to'swing forwardly about the pin 19, thus presenting the auxiliary contact 24 to the trolley wire.

The'frictional resistance of the .auxiliary contact will tend to further swing the trolley mounting forwardly about the pin until the trolley wheel 18 is brought into contact with the wire. Thereupon, a continued rearward movement of the vehicle causes the joint coni tact of the wheel and the auxiliary shoe, thus maintaining a sliding shoe engagement with .the wire. The rotative action of the trolley wheel will prevent the elongated sliding auxiliary shoe 24 from sticking andnbrealring the trolley, the wire or its mounting by reason of the component forces exerted thereon due to the angular direction and movement of Y j Therefore, by reason of this joint arrangement of the auxiliary shoe and the wheel presenting a rotative and elongated contact, the advantages of the shoe are attained while at Vthe same time protecting the action of the trolley by means of the wheel. j

For shunting the current from the shoe to the trolley pole there is provided a cable 26 connected with thepole and at 25 with a U- shaped contact plate' 27 which surrounds the mounting 23, said plate having arms extending between the arms 18 of the harp 12 and the trolley-mounting through which the vpivotal pin 19 extends, as illustrated in Fig. 5.

acting to maintain a clean contacting surface therebetween.

Tn the modifiedV form illustrated in Fig. 6,

i in placer of the auxiliary shoe 24 and the trolley wheel 18 positioned with respect to each other to maintain joint contact with the trolley wire, there is provided a pair of pivotal mountings 118 upon which the pulleys 119 are adapted to rotate, said pulleys supporting an endless current conductingl belt or chain 120 which contacts with the trolley wire throughout substantially the entire distance from one pulley to the other. This con-` struction maintains a substantial area of contact as in thecase of the shoe,- while, the ro-` tating movement of the pulleys prevent sticking in the same manner as above described with respect tothe trolley wheel;

i As illustrated in the modifiedform shown in Fig. 7 the shoe 121 is provided with a recess 122 in whichthe removable shoe plate 123 may be mounted and locked in position by a plurality of pins 124.. This permits of the plate 123 being replaced upon the shoe when worn, thereby eliminating the necessity of replacing shoe as al whole.

The invention claimed is :v

1. A device for making electrical contact with a trolley wire, including atrolley harp,

a contact shoe slidably secured to saidmounting adapted to make contact with said wire when moved in onev direction, and an auxiliary contact member l mounting in positionV to make contact with said wirewhen moving in the opposite direction,said sliding shoe being so mounted Vas to slide with respect to said mounting upon a reversal of its movement for over-balancing said mounting and vcausing it to swing into position to present the auxiliary contact member to said wire. i i

2. A device for making electrical contact with a trolley wire, including a trolley harp, a mounting pivotally supported onsaid harp, a contact shoe slidably supported on said mounting adapted to make contact with said wire whenf moved in one direction, an auxil-A iary shoe having a contact surface extending substantially at right angles thereto, and atrolley wheel in position to engage the trolley wire jointly with said'auxiliary shoe when movedin `the opposite direction, said. contact shoe besupported on, said trolley being moved in thetfirst mentioned direction. Y

3. A. device for making electrical Contact with a trolley wire, including a trolley harp, a mounting pivotallysupported on said harp having an elongated slot in one face thereof, a contact shoe slidably mounted on said face and having a projection extending through said elongated slot provided with an 'elongated opening surrounding the pivotal support of said mounting, anv auxiliary shoe Vextend- Y ing rearwardly from said projection at substantially right angles to said Contact shoe` anda trolley wheel rotatably supportedin said mounting below said auxiliary shoe, said contact shoe being caused to slide rearwardly on f said mounting when the trolley moves forwardly for maintaining a balanced position thereof, and forwardly on said mounting to overbalance the same when the trolley is moved rearwardly, thereby causing said auxiliary shoe and trolley wheel to be brought into contact with said wire. v Y

4.v A device for making electrical contact with a trolley wire, including a trolley harp,

a mounting pivotally supportedon said harp,

a contact member securedon said mounting adapted to make contact with said wire, a U-shaped conducting plate mounted upon the pivotal support between and in electric contact With said harp and mounting, and an electric cable connecting said plate with said contact member for conducting current therefrom directly to said harp.' f

5. A device for making electrical contact with `a trolley wire, including a trolley harp, a reversible mounting pivotally supported on said harp,-a contact shoe slidably mounted upon said mounting adapted to make contact with said wire, an auxiliary Contact shoe, and

a trolley wheel associated therewith in position toy engage the trolley wire jointly with said auxiliary shoe upon completion of the reversing movement of said mountlng.

In witness whereof, we have hereunto afxed our signatures; f

GILES S., MOORE. OTTO MOORE. 

